Receiving apparatus for tubular despatch systems.



EATENTED AUG-2 5, 1903.

. G. G. POWELL. l EEGEIVING APPARATUS EOE TUEULAEDESEATGE sYslEMs.

APPLIUATION FILEDV JAN. 2| 1903.

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gates vorotherabutments the impingementV of a carrier upon which would bel likely to cause injury-to or destruction of the carrier or the said gate or abutment or which might cause injury of the carrier or blocking of the line by catching the carrier in transit there-v by; in providing such an outlet in which the driving pressure is relieved some distance behind the outlet to any desired extent; in providing frictional and gravitational means for decreasing the momentum of the carrier ahead of said point of relief; in `providing means ahead of said frictional and gravitational means by which the remaining pres-y sure may be relieved completely or to any; desired extent,and in providing means for preventing the exhaust of the driving fluid from,`

the outlet of the tube to the apartment in which the-machine is used in order to obvi-4 ate the slight roaring of said exhaust and prevent the air which has passed through lthe tube from mingling with that of the said apartment. j

Some of the objects of my invention areto provide a receiving apparatus for tubular transit systems which shall be entirely free from all complicated operating mechanisms and tube constructions,one in which a'number of carriers in series may be ejected without injury or blocking of the line, and one which may not exhaust from the pan-outlet or outlet of the operative tube.

I have illustrated mypresent invention embodied in a receiver for tubular despatch systems in the accompanying drawings, in which like reference charactersdesignate like parts throughout the several views.

Figure 1 is a longitudinal centralV vertical sec'tiong Fig. 2, a plan.Y Fig. 3 is a detail of the secondaryregulating-damp'er and balanced-valve'mechanisms in longitudinal central vertical section. same, and Fig.A 5 an end view in cross-section ofthe tube-outlet.v

Referring to the drawings, A represents the floor of the apartment inwhich the apparatus is mounted.

Fig. 4 is a plan-of the .a

B represents the incoming tube under the door, and f C .the pan above the door, upon which pan the carrier or carriers are ejected. A lantern-casting 2 is placed in thetube some distance from the tube-outlet, from which lantern-casting 2 a by-pass 3 leads to the ex'- haust 4. A damper-valve 5in the by-pass 3 is operated by a lever 6, mounted adjacent the pan C, at which the operator is stationed.

The tube B is continued beyond the lantern'- casting 2, which continuation 7is `bent up through the door A and again tothehorizontal at the pan C.` A second lantern-casting 8 is placed in the tube above the inclined continuation 7, from which a second by-pass 9 leads to the exhaust 4. A second dampervalve 10 in the by-pass 9 is operated by ale- Vver.,11 within easy access of the operator at the pan C. A chamber 12 is formed between the vlantern-casting 3 and the pan-opening1-3 ofthe tube. The pan-opening 13 of the tube g is normally closed bya pivoted inclined balanced valve 14. The valve 14 is pivoted in the wall of the tube at 15, its lower portion The operation of the'device is y.asifollows:

The operator sets the damper-valve 5 in the by-pass 3 to relieve the pressure beyond the closing the pan-opening 13 of the tube while 'f same, constricting the by-pass 3 by said" damper-valve 5, however, sufficiently to maintain enough pressure in the continuation 7 to drive the carrier up the incline of said continuation and cause it to pass the lanterncasting 8. When once set, the damper-valve 5 will not require changing, except with substantial changes in the condition of the line, such as change of pressure from the compressors or increase or decrease in the carrying load. The inclination and friction of the continuation 7 slows the carrier down to practically the pan velocity atthe lantern-casting 8, and as the carrier passes said lantern-casting all pressure can be removed from behind it by opening wide the damper-valve 5. The damper-valve 5 is always at the hand of the operator, and he may increase or decrease the pressure behind the carrier when said carrier has passed the lantern-casting 8 at will and very quickly to compensate for the constant minor fluctuations always present in a system of this character and deliver the carriers at whatever pan velocity is required. The regulatable pressure-relief forward of the retarding continuation and the sensitive pressure-relief after the carrier has been retarded to give the proper pan velocity provide a perfect means of control.

It will be seen that any number of carriers may be received in this device without regard to the interval separating them.

When the carrier enters the chamber 12 beyond the lantern-casting 8, pressure in excess of the line-pressure is built up between the lower portion of the valve 14 and the head of the carrier, due to the momentum of the carrier, which excess pressure overcomes the power of the spring 19 and opens the valve 18 outward to let the carrier pass out upon the pan C. Should the excess pressure built up be insufficient to completely open the valve 14, the said valve 14 will be completely opened by the contact of the carrier by reason of its inclination, and as said inclination is considerable and the speed of the carrier greatly reduced this contact of the gate by the carrier is not injurious.

If the before-mentioned objectionable features (the noise and exhaust of air into the apartment) are not considered prohibitory, the valve 14 and its adjuncts may be omitted; but this is not to be advised, and the complete combination is preferable.

It is obvious that various changes may be made in the details of construction and arrangement without departing from the spirit of my invention.

Having described my invention, I claim- 1. In receiving apparatus for tubular despatch systems the combination with a tube, of a carrier-retarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, and a second regulatable exhaust from said tube beyond said chamber.

2. In receiving apparatus for tubular despatch systems the combination with a tube having a terminal opening, of a carrier-re tarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, and a second regulatable exhaust from said tube beyond said chamber and between said chamber and said terminal open- In receiving apparatus for tubular despatch systems the combination with a tube having a terminal opening, of an upwardlyinclined carrierretarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, and a second regulatable exhaust from said tube beyond said chamber and between said chamber and said terminal opening.

4. In a receiving apparatus for tubular despatch systems the combination with a tube having.,r a terminal opening, of an upwardlyinclined chamber in the form of a compound curve in said tube, a regulatable exhaust from said tube in advance of said chamber, and a second regulatable exhaust from said tube beyond said chamber and between said chamber and said terminal opening.

5. In a receiving apparatus for tubular despatch systems the combination with a tube having a terminal opening, of a carrier-retarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, and an excess-pressure-actuated valve normally closing said terminal opening.

6. In a receiving apparatus for tubular despatch systems the combination with a tube having a terminal opening, of a carrier-retarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, a regulatable exhaust from said tube beyond said chamber and between said chamber and said terminal opening, an excess-pressure-building chamber between said second exhaust and said terminal opening, and a spring-closed, excess-pressure-operated valve normally closing said terminal opening,

said valve balanced by the line-pressure in said tube at said second exhaust.

7. In a receiving apparatus for tubular despatch systems the combination with a tube having a terminal opening, of a carrier-retarding chamber in said tube, a regulatable exhaust from said tube in advance of said chamber, a regulatable exhaust beyond said chamber and between said chamber and said terminal opening, an excess-pressure-building chamber between said second exhaust and said terminal opening, and a springclosed, excess-pressure and carrier-operated valve normally closing said terminal opening, said valve balanced by the line-pressure in said tube at said second exhaust.

8. In a receiving apparatus for tubular despatch systems the combination with an un- IIO interrupted tube, of a gravity-incline and a two subscribing witnesses, this 5th day of series of bends in said tube for retarding the December, 1902. l Y

carrier and a series of regulatable exhausts l from said tube at prescribed points adjacent GEORGE (1' POWELL" 5 said incline and bends. Witnesses: In testimony Whereofl have signed my GEORGE E. RULPT,

name to this specification, in the presence of ALBERT J. KENYON. 

